From de3bc0e7ba5e89d63cb2dbac4e49a5c4b18669b5 Mon Sep 17 00:00:00 2001 From: Wu Zhangjin Date: Sat, 24 Jul 2010 09:22:14 +0800 Subject: [PATCH] MIPS: Loongson: Oprofile: add a new do_perfcnt_IRQ() On FuLoong-2F IP6 is shared by the performance counter overflow interrupt and the Bonito northbridge interrupt. To reduce overhead only call do_IRQ() when oprofile is enabled to reduce overhead. This patch adds an inline function do_perfcnt_IRQ() to hide the #if's , which can be shared by the other Loongson machines, i.e. gdium. Signed-off-by: Wu Zhangjin Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/1492/ Signed-off-by: Ralf Baechle --- arch/mips/include/asm/mach-loongson/loongson.h | 8 ++++++++ arch/mips/loongson/fuloong-2e/irq.c | 2 +- arch/mips/loongson/lemote-2f/irq.c | 4 +--- 3 files changed, 10 insertions(+), 4 deletions(-) diff --git a/arch/mips/include/asm/mach-loongson/loongson.h b/arch/mips/include/asm/mach-loongson/loongson.h index 53ee881c675..cb6985f2430 100644 --- a/arch/mips/include/asm/mach-loongson/loongson.h +++ b/arch/mips/include/asm/mach-loongson/loongson.h @@ -62,6 +62,14 @@ extern int mach_i8259_irq(void); #define LOONGSON_IRQ_BASE 32 #define LOONGSON2_PERFCNT_IRQ (MIPS_CPU_IRQ_BASE + 6) /* cpu perf counter */ +#include +static inline void do_perfcnt_IRQ(void) +{ +#if defined(CONFIG_OPROFILE) || defined(CONFIG_OPROFILE_MODULE) + do_IRQ(LOONGSON2_PERFCNT_IRQ); +#endif +} + #define LOONGSON_FLASH_BASE 0x1c000000 #define LOONGSON_FLASH_SIZE 0x02000000 /* 32M */ #define LOONGSON_FLASH_TOP (LOONGSON_FLASH_BASE+LOONGSON_FLASH_SIZE-1) diff --git a/arch/mips/loongson/fuloong-2e/irq.c b/arch/mips/loongson/fuloong-2e/irq.c index 99e08c3db3f..d61a04222b8 100644 --- a/arch/mips/loongson/fuloong-2e/irq.c +++ b/arch/mips/loongson/fuloong-2e/irq.c @@ -30,7 +30,7 @@ asmlinkage void mach_irq_dispatch(unsigned int pending) if (pending & CAUSEF_IP7) do_IRQ(MIPS_CPU_IRQ_BASE + 7); else if (pending & CAUSEF_IP6) /* perf counter loverflow */ - do_IRQ(LOONGSON2_PERFCNT_IRQ); + do_perfcnt_IRQ(); else if (pending & CAUSEF_IP5) i8259_irqdispatch(); else if (pending & CAUSEF_IP2) diff --git a/arch/mips/loongson/lemote-2f/irq.c b/arch/mips/loongson/lemote-2f/irq.c index c6db7e7df96..71347d7030c 100644 --- a/arch/mips/loongson/lemote-2f/irq.c +++ b/arch/mips/loongson/lemote-2f/irq.c @@ -79,9 +79,7 @@ void mach_irq_dispatch(unsigned int pending) if (pending & CAUSEF_IP7) do_IRQ(LOONGSON_TIMER_IRQ); else if (pending & CAUSEF_IP6) { /* North Bridge, Perf counter */ -#if defined(CONFIG_OPROFILE) || defined(CONFIG_OPROFILE_MODULE) - do_IRQ(LOONGSON2_PERFCNT_IRQ); -#endif + do_perfcnt_IRQ(); bonito_irqdispatch(); } else if (pending & CAUSEF_IP3) /* CPU UART */ do_IRQ(LOONGSON_UART_IRQ); -- 2.39.2